MJD122, NJVMJD122 (NPN), MJD127, NJVMJD127 (PNP)
www.onsemi.com
6
t, TIME OR PULSE WIDTH (ms)
1
0.01
100
0.3
0.2
0.07
r(t), EFFECTIVE TRANSIENT
R
q
JC(t)
= r(t) R
q
JC
R
q
JC
= 6.25°C/W
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t
1
T
J(pk)
- T
C
= P
(pk)
q
JC(t)
P
(pk)
t
1
t
2
DUTY CYCLE, D = t
1
/t
2
0.01
THERMAL RESISTANCE (NORMALIZED)
0.7
0.5
0.1
0.05
0.03
0.02
0.02 0.03 0.05 0.1 0.2 0.3 0.5 1 2 3 5 10 20 30 50 100 200 300 500
0.2
SINGLE PULSE
D = 0.5
0.05
0.1 0.5 30.3
0.2
0.7 1
5
I
C
, COLLECTOR CURRENT (AMP)
V
CC
= 30 V
I
C
/I
B
= 250
I
B1
= I
B2
T
J
= 25°C
t, TIME (s)μ
3
2
0.7
0.5
0.3
0.2
t
s
t
f
t
r
t
d
@ V
BE(off)
= 0 V
PNP
NPN
Figure 9. Switching Times Test Circuit Figure 10. Switching Times
0.1
1
10752
Figure 11. Thermal Response
V
2
PPROX
+8 V
0
≈ 8 k
SCOPE
V
CC
-30 V
R
C
51
FOR t
d
AND t
r
, D
1
IS DISCONNECTED
AND V
2
= 0
FOR
NPN
TEST
CIRCUIT
REVERSE
ALL
POLARITIES.
25 ms
t
r
, t
f
≤ 10 ns
DUTY CYCLE = 1%
+ 4 V
R
B
& R
C
VARIED TO OBTAIN DESIRED CURRENT LEVELS
D
1
, MUST BE FAST RECOVERY TYPE, e.g.:
1N5825 USED ABOVE I
B
≈ 100 mA
MSD6100 USED BELOW I
B
≈ 100 mA
V
1
PPROX
-12 V
TUT
R
B
D
1
≈ 120
0.07
0.05
0.1
0.01
I
C
, COLLECTOR CURRENT (AMP)
5
V
CE
, COLLECTOR-EMITTER VOLTAGE (VOLTS)
0.3
100
5
2
0.5
0.2
BONDING WIRE LIMIT
THERMAL LIMIT
T
C
= 25°C (SINGLE PULSE)
SECOND BREAKDOWN LIMIT
10 507
T
J
= 150°C
100m
σ
1ms
dc
0.1
1
3
15
20
3020 70
CURVES APPLY BELOW RATED V
CEO
5ms
Figure 12. Maximum Forward Bias
Safe Operating rea
321
10
0.05
0.02
0.03
500m
σ
There are two limitations on the power handling ability of
a transistor: average junction temperature and second
breakdown. Safe operating area curves indicate I
C
− V
CE
limits of the transistor that must be observed for reliable
operation; i.e., the transistor must not be subjected to greater
dissipation than the curves indicate.
The data of Figure 12 is based on T
J(pk)
= 150_C; T
C
is
variable depending on conditions. Second breakdown pulse
limits are valid for duty cycles to 10% provided T
J(pk)
< 150_C. T
J(pk)
may be calculated from the data in
Figure 11. At high case temperatures, thermal limitations
will reduce the power that can be handled to values less than
the limitations imposed by second breakdown.